U.S. Route 78 in South Carolina

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U.S. Highway 78

US 78 highlighted in red
Route information
Maintained by SCDOT
Length142.207 mi[1][2][3][4][5][6] (228.860 km)
Existed1927–present
Major junctions
West end US 1 / US 25 / US 78 / US 278 / SR 10 / SR 121 at the Georgia line near North Augusta
Major intersections
East endLine Street / King Street in Charleston
Location
CountryUnited States
StateSouth Carolina
CountiesAiken, Barnwell, Bamberg, Orangeburg, Dorchester, Charleston
Highway system
← I-77→ SC 79

U.S. Route 78 (US 78) is a 142.207-mile (228.860 km) U.S. highway that travels from Memphis, Tennessee to Charleston, South Carolina. In the U.S. state of South Carolina, it travels from the Savannah River at North Augusta to its eastern terminus in Charleston; connecting the cities of Aiken, Summerville, and North Charleston.

Route description

US 78 enters South Carolina by crossing the Savannah River in North Augusta; sharing concurrences with US 1, US 25, US 278 and South Carolina Highway 121 (SC 121). In the immediate 2-mile (3.2 km) area, it sheds most concurrencies, sharing only with US 1 towards Aiken; it also connects with Interstate 520 (I-520), which is a partial beltway around the Augusta metropolitan area. In Aiken, it travels through the downtown area, where US 1 splits north towards Columbia. West of Williston is SC 781, which connects back with US 278; the routing allows travelers to bypass Aiken all together between Williston and Augusta.[7]

Traveling in a southeasterly direction, it goes through the cities and towns of Williston, Blackville, Denmark, Bamberg, Branchville and St. George, where connects with I-95. Continuing east, it passes through Dorchester and begins to parallel with I-26 in a southeasterly direction through Summerville. It enters Charleston County at Lincolnville, where the highway skirts just inches south of the Berkeley County line. In North Charleston, US 78 shares a concurrency with US 52, as it connects with I-526. Entering Charleston, it splits with US 52 and goes south along King Street; its eastern terminus at Line Street, a block away from US 52's eastern/southern terminus and nearby to I-26/US 17 interchange.[7]

US 78 is a predominantly two-lane rural highway connecting much of the Lowcountry. Wider sections (four-lanes or more) are found between North Augusta–Aiken, St. George, and North Charleston. Though it provides the most direct route between Augusta (and points west, such as Atlanta) and Charleston (using US 278 and SC 781 to bypass Aiken), it is not a busy route because of the many cities and towns it goes through.[7]

History

Established in 1927 as an original US highway, it traveled closely as it does today; from North Augusta to Charleston, connecting the cities and towns of Aiken, Bamberg, St. George, and North Charleston.

By 1931, US 78 was rerouted north of Summerville and Lincolnville, leaving Richardson Avenue/Lincoln Avenue. Around 1939, US 78 was realigned from Meeting Street to Rivers Street, south of Durant Avenue in the Charleston area. Also in 1939, US 78 was fully paved in the state, its last unpaved section was between St. George and US 178. By 1952, US 78 was placed on new four-lane highway bypassing Clearwater, Burnettown, and Gloverville; also by same year a new bridge was constructed over the Savannah River, leaving Fifth Street Bridge. By 1967, US 78 was adjusted to bypass south of mainstreet Blackville, leaving a secondary road, but was later upgraded as a connector (signed as a business loop).[8][9]

Major intersections

CountyLocationmi[1][2][3]
[4][5][6]		kmDestinationsNotes
Savannah River0.0000.000





 US 1 south / US 25 south / SR 121 south / US 78 west / US 278 west / SR 10 west (Gordon Highway) – Augusta		Continuation into Georgia
0.000–
0.005		0.000–
0.0080		South Carolina–Georgia state line
AikenNorth Augusta0.188–
0.340		0.303–
0.547		5th Street Bridge / River North DriveInterchange
0.640–
0.710		1.030–
1.143
 US 25 / SC 121 north – North Augusta, Edgefield		East end of freeway section; eastern end of US 25 and SC 121 concurrencies
0.8701.400

 Buena Vista Avenue (SC 125 Conn. west) to I-20 / SC 230		Right-in/right-out interchange; westbound exit and entrance; eastern terminus of SC 125 Conn.[10]
1.560–
1.950		2.511–
3.138		 I-520 (Palmetto Parkway) – Augusta, Columbia, AtlantaI-520 exit 17
Clearwater2.150–
2.380		3.460–
3.830
 US 278 east / SC 125 (Atomic Road) – Beech Island, Savannah River Site

 SC 421 north (Augusta Road) – Clearwater		Interchange; eastern end of US 278 concurrency; southern terminus of SC 421
Clearwater–Burnettown line4.0406.502 SC 126 (Belvedere–Clearwater Road) – Belvedere
Warrenville10.324–
10.330		16.615–
16.625		 SC 191 (Main Street) – Graniteville, Vaucluse, Warrenville
Aiken12.30019.795







 US 1 Truck north / US 78 Truck east / SC 19 Truck to SC 118 (Robert M Bell Parkway / Hitchcock Parkway) / I-20 / SC 302		Southern terminus of US 1 Truck; western terminus of US 78 Truck; to USC Aiken
12.47020.069
 SC 421 south (Augusta Road)		Northern terminus of SC 421
15.62025.138 SC 19 (Laurens Street) – Eureka, Edgefield
15.80025.428
 SC 19 Conn. (Chesterfield Street) – Savannah River Site		Signed also as SC 19
15.89025.572
 US 1 north (York Street NE)		Eastern end of US 1 concurrency
​18.25029.371

 SC 4 east (Wagener Road) to SC 302		Western terminus of SC 4
​18.45029.692






 US 1 Truck north / US 78 Truck west / SC 4 Truck east / SC 118 south / SC 302 / I-20 (Pine Log Road SE)		Western end of SC 4 Truck concurrency; southern terminus of US 1 Truck; eastern terminus of US 78 Truck; northern terminus of SC 118
Windsor28.88046.478

 SC 4 Truck east (State Park Road) – Aiken State Park, State Park Boat Landing		Eastern end of SC 4 Truck concurrency
​34.15754.970
 SC 781 west (Tinker Creek Road)		Eastern terminus of SC 781
BarnwellWilliston37.29760.024
 SC 39 south (Rosemary Street / Dunbarton Road)		Western end of SC 39 concurrency
37.55060.431
 SC 39 north (Elko Street / Springfield Road) – Springfield		Eastern end of SC 39 concurrency
Elko40.47065.130 SC 37 (Bay Street) – Barnwell, Springfield
Blackville46.93075.527

 US 78 Bus. east (Walker Street)		Signed western terminus of US 78 Bus.
47.01075.655 SC 3 (Solomon Blatt Avenue) – Barnwell
47.09075.784
 SC 304 south (Lartigue Street) – Hilda		Northern terminus of SC 304
47.54076.508

 US 78 Bus. west (Main Street / US 78 Conn. west)		Eastern terminus of US 78 Bus./US 78 Conn.
BambergDenmark55.25088.916 US 321 / SC 70 (Palmetto Avenue) – Orangeburg, Barnwell
Bamberg61.96099.715 US 301 / US 601 – Orangeburg, Allendale, Ehrhardt
62.710100.922
 SC 362 south – Smoaks, Williams		Northern terminus of SC 362
​71.980115.841
 SC 61 south (Edisto River Road)		Northern terminus of SC 61
​72.170116.146
 US 78 Conn. south to SC 61		Northern terminus of US 78 Conn.
OrangeburgBranchville76.660123.372
 US 21 south (Freedom Road) – Smoaks, Walterboro, Savannah		Western end of US 21 concurrency
76.860123.694
 US 21 north (Freedom Road) – Orangeburg, Columbia		Eastern end of US 21 concurrency
DorchesterSt. George89.810–
89.830		144.535–
144.567		 I-95 – Savannah, FlorenceI-95 exit 77
91.830147.786 US 15 (Parler Avenue) – Walterboro, Santee
​105.470169.738
 US 178 west (East Main Street) – Harleyville		Eastern terminus of US 178
​108.176174.092
 SC 27 north (Ridgeville Road) – Holly Hill		Western end of SC 27 concurrency
​108.664174.878
 SC 27 south (Ridgeville Road) – Ridgeville		Eastern end of SC 27 concurrency
​110.114177.211School Street west (SC 173 west) / Myers–Mayo Road eastEastern terminus of SC 173 and School Street; western terminus of Myers–Mayo Road
Summerville119.124191.711
 US 17 Alt. (North Main Street) – Walterboro, Moncks Corner
119.404192.162 SC 165 (Berlin G. Myers Parkway / US 17 Alt. Truck) – Ravenel
CharlestonNorth Charleston126.114–
126.139		202.961–
203.001		 I-26 – Columbia, CharlestonI-26 exit 205
127.534–
128.334		205.246–
206.534
 US 52 west / N.A.D. Road east – Goose Creek, Moncks Corner		Western end of US 52 concurrency; western terminus of N.A.D. Road; interchange
129.224207.966

 US 52 Conn. south to I-26 east – Charleston		Northern terminus of US 52 Conn.; I-26 exit 209A; no access to I-26 west
133.844–
134.034		215.401–
215.707		 I-526 (Mark Clark Expressway) – Savannah, Mount PleasantI-526 exit 18
137.044220.551
 SC 642 west (Dorchester Road)		Eastern terminus of SC 642
137.194220.792
 SC 7 south (Cosgrove Avenue)		Northern terminus of SC 7
137.684221.581
 US 52 east (Carner Avenue)		Eastern end of US 52 concurrency
Charleston142.207228.860

 Line Street to US 17 north		No access from US 78 (King Street) or Line Street eastbound to westbound Line Street; eastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

  1. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  2. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  3. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  4. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  5. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  6. ^ a b "Highway Logmile Report". South Carolina Department of Transportation. Retrieved January 3, 2021.
  7. ^ a b c Google (May 23, 2013). "Overview map of US 78 in South Carolina" (Map). Google Maps. Google. Retrieved May 23, 2013.
  8. ^ General Highway Map, Barnwell County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1967. Retrieved April 11, 2014.
  9. ^ General Highway Map, Barnwell County, South Carolina (PDF) (Map). Cartography by SCDOT. South Carolina Department of Transportation. 1987. Retrieved April 11, 2014.
  10. ^ Aiken & North Augusta Urban Area (PDF) (Map). South Carolina Department of Transportation. August 2019. p. Sheet 6. Retrieved September 12, 2020.

External links


U.S. Route 78
Previous state:
Georgia 		South Carolina Next state:
Terminus
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